Internal oblique

Muscle parts

None

Latin name

Musculus obliquus internus abdominis

Latin muscle parts

None

Group

Abdominal wall – lateral musculature – middle layer

Etymology

This muscle’s name in English is the within (middle) slanting muscle of the belly. The Latin term obliquus means slanting or sideways and describes its orientation.The Latin term internus means “within.”The word abdomen is of uncertain etymology. Two possible origins of this word are from the Latin abdere meaning “to stow away,” which the abdomen does to the digestive organs. The other possibility is that it comes from adipem meaning “fat.”